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CVE-2024-56672 is a use-after-free vulnerability in the Linux kernel block cgroup subsystem. The blkcg_unpin_online() routine walks upward through the blkcg hierarchy while releasing online pins. It obtained the parent through blkcg_parent() after invoking blkcg_destroy_blkgs() on the current blkcg. The destruction operation could allow the current blkcg object to be freed, making the subsequent parent-pointer access dereference freed memory. The correction obtains the parent pointer before destroying the blkcg's blkg objects.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.